A 2-m clay layer in the field has a current effective stress, o= 70 kN/m2. There is a net stress increase, Ao = 180 kN/m2, due to a foundation load. Calculate the expected primary consolidation settlement. The results of a consolidation test on the clay are given below. o' (kN/m?) e 0.98 12 0.94 50 0.82 200 0.73 400 © Cengage Leaming 2014

A 2-m clay layer in the field has a current effective stress, o= 70 kN/m2. There is a net stress increase, Ao = 180 kN/m2, due to a foundation load. Calculate the expected primary consolidation settlement. The results of a consolidation test on the clay are given below. o' (kN/m?) e 0.98 12 0.94 50 0.82 200 0.73 400 © Cengage Leaming 2014

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

Question

11.12 A 2-m clay layer in the field has a current effective stress, o= 70 kN/m. There
is a net stress increase, Ao = 180 kN/m², due to a foundation load. Calculate the
expected primary consolidation settlement. The results of a consolidation test on
the clay are given below.
o' (kN/m?)
e
0.98
12
0.94
50
0.82
200
0.73
400
© Cengage Leaming 2014

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